<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<script>
    'use strict'
    let arr = [0,2,34,5,6];
    alert(arr);
    console.log(arr.join('-'));
    console.log(arr.sort());
</script>
<body>

</body>
</html>